Phantasy Star Universe: Ambition of the Illuminus

Description: There are 3 unlockable Slayer titles that can be unlocked by defeating the enemy of the same name.
1) Defeat De Rol Le to become the De Rol Le Slayer
2) Defeat Mother Brain to become the Mother Brain Slayer
3) Defeat Slterazgohg to become the Slterazgohg Slayer

Where is the room key in the level where you have to save six survivors in the dorms? I can't get past the first room because I can't find the room key! It is sooo frustrating because I've combed the room for it for more than half an hour. How do you get past the first red door? Answers: 1